Aircraft



Sept. 18, 1928.

vA. A. ANDERSON AIRCRAFT Filed April 14, 1927 Sil Fatented Sept, 18, 192@ lllalllli AFF@ @Flidi@ amenant?.

application area april la, leer. serial no.' team.

'lhis invention relates' to aircraft and more particularly to airplanes, an object of the invention being to provide means whereby the ends of the planes or wings can be extended. and contracted.

ln order that a quick take-0H may be posjected and retracted by the operator in thefuselage of the airplane, and this operation can be easily carried out sothat these extensions may be projected during the taireod and also during the landing and at any other time desired, and can be drawn inwardly or retracted at the will of the operator. Y

My invention is of coursel capable of a wide range of modification and l do not of course limit myself ,to .the specic details of construction illustrated in the drawings and which shall be hereinafter described as it is to be distinctly understood that the draW- ings are for illustration only and show but one form of the device which may be employed. v

With these and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts which will be more fully hereinatter described and pointed out in the claim.

lin the accompanying; drawings- Figure 1 is a plan view, more or less diagrammatic, partly broken away Oand partly in section, illustrating my invention;

Figure 2 is a fragmentary view on an enlarged scale in section on the. line 2--2 of Figure l;

Figure 3 is an enlarged view in section on the line 3 3 of Figure 1.

1 represents the fuselage and 2, 2 the wings, which together constitute a plane, and while l have illustrated my invention in connection with aircraft of the monoplane type it is obvious that the device is adapted for any type of plane.

The end portions of the plane 2, 2 ll shall refer to as wings, and these wings 12, 2 have extensions 3 on their ends' which can be` moved outwardly and inwardly, as `will be explained.

These extensions 3 are preferably hollow and telescope upon the ends of the wings, as illustratedclearly in Figure 2. The ext-ensions l3 have parallel rods t xed thereto, and theserods are mounted to move in guide sleeves 5, 5 fixed in the wings ofthe plane. These guide sleeves 5, 5 are preferably formed with internal anti-friction bearings 6 so as to reduce the frictional contact of the rods and bearing sleeves to a minimum and facilitate the easy movement of the extensions.

rThe rear portions of the .extensions 3 may be open but it is desirable that the front portions thereof be .closed and rigid against the fro'nt edges of the wings, as clearly shown in Figure l. 'llhe extensions may of course be moved inwardly and outwardly through the medium of any desired mechanism but ll i have illustrated a simple construction of operating and controlling means which includes rack bars -7 extending through the wings 2 and fixed to the' extensions 8.

The'inner ends of these rack bars are engaged by a pinion 8 on a vertical shaft 9,

The extensions 3 are braced by posts 11.

on the under portions thereof, and rods or analogous devices 12 at their intermediate portions engage these posts. 'lihe outer ends of the rods 12 are secured to the lower portions of the extensions, as shown at 13, andthe inner portions of the rods are fixed to collars 15 which-slide on rods 1G.

rlhe rods 16 are fixed to the under faces of the wings'by means of brackets 1'?, and the outer of these brackets 17 serves to limit the movement of the collars when the eatensions are fully projected.

Furthermore, the outward movement of the extensions is limited by lixeddanges 19 on the wings, which arel disposed inwardly at an angle and are engaged by tongues 2O on the upper portions of the extensions likewise at an angle, so that these parts 19 and 20 form an edectual interlockto brace the extensions as well as limit their outward movement.

llt will thus be noted `that the operator can, by turning the handwheel 18, cause the Vieu llO

extensions 3 to be projected -or Withdrawn, and the degree of projection can of course be varied to suit conditions.

I havenot attempted to indicate any sizes or proportions ofthe severalparts and this is of course Well Within the scope of the nvention, and I do not Wish to limit myself to the speoic details set forth but consider myself atvliberty to make such changes "and alterations as fairly yfall Within 'the spirit and scope of theappended claim.

l claim:

In combination Withan airplane, of ex` tensions on-the ends of 'the airplane, means for moving the extensions inwardly, posts depending from the extension'syrods longitudinally positioned'under the Wings, oo1- lars mounted on the rods, members connecting the collars With the outer portions of the extensions and engaging the posts at their intermediate portions?, and means for limiting the outward movement of the collars.

BRAM A. ANDERSON. 

